Image Region Access Control via Segmentation and Shielding
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Solution Overview
Problem
Existing image sharing methods lack flexibility in managing access rights, as they either allow or deny access to entire images, failing to meet user demands for nuanced control over image sharing.
Innovation Solution
The method involves determining protected areas within an image, applying access rights to these areas to create independent sub-image data, shielding the protected areas to obtain main image data, and associatively storing both for flexible access and display based on user rights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access rights are applied to entire pictures or videos, then security control is improved, but user experience satisfaction deteriorates due to inability to meet multiple sharing demands
Solution Approach 1:
The patent divides an image into multiple regions of interest (ROIs), each with independent access rights. Instead of applying a single access right to the entire image, the system segments the image into distinct areas (e.g., face, license plate, sensitive information zones) and assigns different protection levels to each segment. This allows different users to access different portions of the same image based on their authorization, resolving the contradiction between security control and sharing flexibility.
Solution Approach 2:
The patent implements local quality control by applying different access rights and protection mechanisms to different regions within the same image. Each ROI can have customized security attributes (e.g., encryption keys, access permissions, watermarks) while the rest of the image maintains different settings. This enables precise control over what parts of the image are visible to whom, improving both security and user experience.
2Adaptability or versatility
If hierarchical region-based access control is implemented, then sharing flexibility is improved, but system complexity increases
Solution Approach 1:
The patent manages complexity by segmenting the image processing into standardized ROI templates with pre-defined characteristics. Rather than allowing arbitrary complex segmentation, the system uses aĉé set of common ROI types (faces, license plates, documents, etc.) that can be automatically detected and processed using standardized algorithms, reducing the complexity burden while maintaining flexibility.
Solution Approach 2:
The patent performs preliminary actions by pre-defining ROI regions and their access rights during the image upload or creation phase. Access control policies are established in advance for each ROI, and the system generates appropriate encryption keys and access tokens beforehand. This preliminary setup reduces the complexity of real-time access control decisions during image viewing and sharing operations.
Data Source
AI summary
A method and device for processing and accessing image are provided. The image processing method includes: one or more protected areas are determined in an original picture to be processed, image data of the one or more protected areas are protected by adding access rights, one or more independent sub-image data corresponding to the one or more protected areas are obtained, and then the one or more protected areas in the original picture are shielded to obtain main image data, the images in the protected areas being invisible in the shielded original picture; and the one or more obtained independent sub-image data and the obtained main image data are associatively stored.